Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbit/s
This Recommendation includes an electronic attachment which contains the test vectors and the C reference code for implementation verification of the G.723.1 fixed-point dual-rate speech coder for multimedia communications of the G.723.1 floating point speech coder and of the scalable channel coding scheme

Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbit/s
Test vectors, test sequences and C Reference code described in this Recommendation are common to Recommendation main body and to Annex A, and may be found on 3 diskettes included with G.723.1 Annex A

Silence compression scheme
This Annex includes 3 diskettes which are common to Recommendation main body and to this annex and which contain test vectors and C reference code for implementation verification of the G.723.1 fixed point dual rate speech coder for multimedia communications

Alternative specification based on floating point arithmetic
This Annex includes 1 CD-ROM containing the reference code and the test vectors for implementation verification of the G.723.1 floating point speech coder. The CD-ROM may be replaced on demand by 14 diskettes